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Problems
Contests
International Contests
IMO Longlists
1972 IMO Longlists
9
9
Part of
1972 IMO Longlists
Problems
(1)
Possible values of kth largest angle in a convex n-gon
Source:
11/3/2010
Given natural numbers
k
k
k
and
n
,
k
≤
n
,
n
≥
3
,
n, k \le n, n \ge 3,
n
,
k
≤
n
,
n
≥
3
,
find the set of all values in the interval
(
0
,
π
)
(0, \pi)
(
0
,
π
)
that the
k
t
h
−
k^{th}-
k
t
h
−
largest among the interior angles of a convex
n
n
n
-gon can take.
inequalities unsolved
inequalities